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J. Stability of Excavations: <br />' 1. Slope sides of excavations to comply with local codes and <br />ordinances having jurisdiction. <br />2. Shore and brace where sloping is not possible because of space <br />restrictions or stability of material excavated. <br />' 3. Maintain sides and slopes of excavations in safe condition until <br />completion of backfilling. <br />K. Shoring and Bracing: <br />1. Establish requirements for trench shoring and bracing to comply <br />twith local codes and authorities having jurisdiction. <br />2. Maintain shoring and bracing in excavations regardless of time <br />period excavations will be open. Carry down shoring and bracing <br />as excavation progresses. <br />L. Dewatering: <br />1. Prevent surface water and subsurface or groundwater from flowing <br />into excavations. <br />' 2. Do not allow water to accumulate in excavations. <br />3. Provide and maintain pumps, well points, sumps, suction and <br />' discharge lines, and other dewatering system components <br />necessary to convey water away from excavations. <br />M. Stockpile satisfactory excavated materials where directed, until required <br />for backfill or fill. Place, grade and shape stockpiles for proper drainage. <br />N. Trenches shall be uniform width required for the particular item to be <br />installed, sufficiently wide to provide ample working room. Provide <br />minimum 8 in. clearance on each side of pipe or conduit. <br />1. Excavate trenches to depth indicated or required for indicated flow <br />lines and invert elevations. <br />' 2. Where rock is encountered, carry excavation 6 in. below scheduled <br />elevation and backfill with a 6 in. layer of crushed stone or gravel <br />' prior to installation of pipe. <br />3. For pipes or conduit 5 in. or less, excavate to indicated depths. <br />07/06 02221 -8 05 -5564 <br />